Ship s windlass



UNITED STATES PATENT OFFICE.

WM. CARR, OF BATH, MAINE.

SHIP S WINDLASS.

Specification of Letters Patent No. 2,449, dated February 7, 1842.

To all 10710172, it may concern Be it known that I, WILLIAM CARR, ofBath, in the county of Lincoln and State of Maine, have invented a newand useful Improvement in the Mode of Moving` the Vindlasses of Ships;and I do hereby declare that the following is a full and exactdescription thereof.

The nature of my invention consists in the use of double knee leversattached to the brakes at one end, and operating by pawls attached tothe other upon ratchets affixed to the windlass.

To enable others skilled in the art to make and use my invention, Iproceed to describe its construction and operation.

The windlass, windlass bits and pawl bit, all marked A, in theaccompanying drawings, are to be constructed and used as in other cases,with the usual pawl and pawl plates. To these my new machinery is to beapplied as follows, viz On each side of the usual pawls, and abouteighteen inches distant therefrom, a ratchet wheel is to be placed andaffixed around the windlass, about as large in circumference as thewindlass itself, and about six inches in thickness, marked B. Directlyforward of these, at each side of the pawl bit, marked A, C, which forthe purpose should be about three and a half feet wide, one foot and ahalf thick, and five and a half feet high, an aperture is to be madesufficient to insert a two knee lever, as hereafter described, and havethe same fastened by a pivot in the middle, on which it may play, whichaperture or mortise is to be 8 or l0 inches above the top of thewindlass. The two knee levers marked D to be thus inserted consists of ahorizontal arm marked 2 in the middle part, about 24 or Q6 inches long,eight or nine inches from the after end of which is the pivot, and aboutfour inches square. On the end of this arm next to the windlass, is afirm, fixed knee, with the arm, marked 3, extending therefromperpendicularly, downward, about seven inches by three and nine or teninches long. To the lower end of this arm, by a mortise and pin or pivoton which they may play, are to be attached, side by side, and fastenedby the same pivot, three pawls, about two inches square, a littleflattened at the end inserted into the lever, and of unequal lengths,with the other ends resting, at unequal distances, upon the ratchet, thelengths being` 11--12 and 13 inches. At the other or forward end of thehorizontal arm, is to be another knee, formed by the arm marked l, whichis to be about 2 inches square, and to be inserted by a joint, so as toadmit of sufficient motion by one end to said horizontal arm, and by theupper end to one end of the crosshead of the usual double brake markedE, which is to play on a pivot in the middle, afhxed to the pawl bitnear the top. The downward motion of the brake, at each end, will thusby means of the twoknee lever and its pawls, force round the ratchet onthat side, and consequently the windlass to which it should be firmlyafxed, and by the continued motion on both sides, giving' a rotarymotion to the windlass.

The new materials may be of iron, and all cast, except the pins orpivots and pawls. The foregoing dimensions are calculated for a ship ofabout 500 tons. They may be increased or diminished for ships of greateror less burthen.

I am aware that ships windlasses have been operated with a lever workingupon a fulcrum, and having a. pawl or hand on each side thereof so as toactuate the windlass by the up and down motion of one end of the lever,and therefore I do not claim this as my invention; nor do I claim themere application of the brake to a ships windlass.

What I do claim and desire to secure by Letters Patent, is

The combination of the brake with the two-knee lever and pawls andratchets for the purpose, and in the manner described.

WILLIAM CARR.

Witnesses:

B. RANDALL, S, A. RANDALL,

